visit(callback)
Iterates all cells in row-major order and calls callback({ row, col, value })
for each. Return false
from the callback to stop early. Reading and mutating the grid inside the callback is allowed.
Example
(click to randomly refill q
with emojis
)
code
Quadrille.cellLength = 50;
let q;
const emojis = ['🐸', '🐯', '🐱', '🐶', '🐮'];
function setup() {
createCanvas(8 * Quadrille.cellLength, 8 * Quadrille.cellLength);
q = createQuadrille(8, 8);
update();
}
function draw() {
background('#DAF7A6');
drawQuadrille(q);
}
function mousePressed() {
update();
}
function update() {
q.visit(({ row, col }) => q.fill(row, col, random(emojis)));
}
- All cells are visited in row-major order.
- The
callback
decides what to do with each cell (e.g., refill with a random emoji).
Syntax
visit(callback)
Parameters
Param | Description |
---|---|
callback | Receives { row, col, value } . Return false to stop early; any other return is ignored |